Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:21:35 2013

Optimize a model with 30910 rows, 30360 columns and 121110 nonzeros
Presolve removed 55 rows and 0 columns
Presolve time: 0.13s
Presolved: 30855 rows, 30360 columns, 121055 nonzeros
Variable types: 30305 continuous, 55 integer (55 binary)

Root relaxation: objective 5.235780e+04, 4911 iterations, 2.35 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 52357.8015    0   49          - 52357.8015     -      -    2s
H    0     0                    79712.000000 52357.8015  34.3%     -    3s
     0     0 65310.6177    0    9 79712.0000 65310.6177  18.1%     -    6s
H    0     0                    72819.035786 65310.6177  10.3%     -    6s
H    0     0                    67660.000000 65310.6177  3.47%     -    6s
     0     0 65838.6533    0    4 67660.0000 65838.6533  2.69%     -    6s
H    0     0                    66438.000000 65838.6533  0.90%     -    7s
     0     2 65845.6876    0    4 66438.0000 65845.6876  0.89%     -    7s
H    3     2                    66086.035256 65945.6667  0.21%   244    7s
H    4     3                    66038.765957 65949.6667  0.13%   188    7s
*    6     2               5    65954.000000 65952.1154  0.00%   134    7s

Cutting planes:
  Implied bound: 51

Explored 7 nodes (9067 simplex iterations) in 7.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.595400000000e+04, best bound 6.595211538462e+04, gap 0.0029%